EP 3536894 B1 20201014 - COUPLING FOR CONNECTING DOWNHOLE TUBULARS
Title (en)
COUPLING FOR CONNECTING DOWNHOLE TUBULARS
Title (de)
KUPPLUNG ZUM VERBINDEN VON BOHRLOCHROHREN
Title (fr)
RACCORD PERMETTANT DE RACCORDER DES ÉLÉMENTS TUBULAIRES DE FOND DE TROU
Publication
Application
Priority
EP 18160858 A 20180309
Abstract (en)
[origin: EP3536894A1] A coupling for connecting downhole tubulars includes: a tubular body; and at least one of: a male screw thread formed on an outer surface of the body, and a female screw thread formed in an inner surface of the body. The at least one thread has a thread-form including a crest, a root, and a pair of flanks. The crest and the root are each cambered about a respective first and second camber radius. Each camber radius is greater than an outer diameter of the coupling.
IPC 8 full level
E21B 17/042 (2006.01); F16L 15/00 (2006.01)
CPC (source: EP KR US)
B23K 31/02 (2013.01 - KR); E21B 17/0423 (2013.01 - US); E21B 17/0426 (2013.01 - EP KR US); F16L 15/00 (2013.01 - EP); F16L 15/06 (2013.01 - KR US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3536894 A1 20190911; EP 3536894 B1 20201014; AU 2019230532 A1 20200917; AU 2019230532 B2 20240523; BR 112020018233 A2 20201229; CA 3091794 A1 20190912; CL 2020002280 A1 20210219; CN 112204223 A 20210108; CN 112204223 B 20230414; EA 202091854 A1 20210113; JP 2021516303 A 20210701; JP 7280292 B2 20230523; KR 102665007 B1 20240509; KR 20210028599 A 20210312; MX 2020009358 A 20210129; PT 3536894 T 20201119; US 11598159 B2 20230307; US 2021047889 A1 20210218; WO 2019170436 A1 20190912; ZA 202005190 B 20220330
DOCDB simple family (application)
EP 18160858 A 20180309; AU 2019230532 A 20190222; BR 112020018233 A 20190222; CA 3091794 A 20190222; CL 2020002280 A 20200903; CN 201980017942 A 20190222; EA 202091854 A 20190222; EP 2019054453 W 20190222; JP 2020570629 A 20190222; KR 20207025823 A 20190222; MX 2020009358 A 20190222; PT 18160858 T 20180309; US 201916978821 A 20190222; ZA 202005190 A 20200820